ZNeBur

I'd like to have that skip feature too for [_pswindows.py#{L994:L1010}](https://github.com/giampaolo/psutil/blob/7eadee31db2f038763a3a6f978db1ea76bbc4674/psutil/_pswindows.py#L994), Would something like the following work? ``` @wrap_exceptions def open_files(self): if self.pid in (0, 4): return [] ret = set()...